440R-D23171 24VDC

Overview of Allen Bradley 440R-D23171

The Allen Bradley 440R-D23171 is a part of the MSR125HP safety relay series, designed to interface with two-hand control devices in safety-related circuits. This relay is crucial for ensuring operator safety by providing an interface between the control device and the safety-related circuit. It is particularly useful in applications requiring simultaneous activation of two control devices to ensure machine operation safety. The 440R-D23171 operates on a 24V DC power supply and features removable terminals for easy installation and maintenance.

Key Features of Allen Bradley 440R-D23171

- **Power Supply**: 24V DC - **Immediate Safety Outputs**: 2 Normally Open (NO) - **Reset Type**: Automatic/Manual Reset - **Removable Terminals**: Yes - **Enclosure Width**: 22.5 mm - **Mounting Type**: DIN rail mounting - **Contact Rating**: 3 Amps - **Two-Hand Control**: Designed for interfacing with two-hand control devices to ensure safety

Technical Specs of MSR125HP

Parameter	Value
Power Supply	24V DC
Immediate Safety Outputs	2 NO
Auxiliary Outputs	N/A
Delayed Safety Outputs	N/A
Reset Type	Automatic/Manual
Removable Terminals	Yes

Applications / Use Case

The Allen Bradley 440R-D23171 is primarily used in industrial machinery safety applications where two-hand control is required. This includes press machines, material handling equipment, and other unsafe machinery operations that demand simultaneous activation of controls to prevent accidents. It ensures that operators cannot initiate machine operation without simultaneously using both hands, thereby reducing the risk of severe injury.

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